Easy. Just create a new "disease".
Yet now some powerful figures in mental health are claiming to have identified a new disorder that could vastly expand the ranks of young people treated for attention problems. Called sluggish cognitive tempo, the condition is said to be characterized by lethargy, daydreaming and slow mental processing.
Something tells me that the meds will mostly be given to boys. Does no one think that "daydreaming" could be cured by hiring more involved and engaging teachers? Nah, soak the kids' brains in psychotropics, that's much better.